OK, so I was doing my long ride yesterday, and it never ceases to amaze me the crazy things I start to think about to occupy my mind. Anyway, I started thinking about fat loss during long aerobic workouts. My long ride yesterday was 6.5 hours, and according to my S710 I burned around 6,000 Calories (I know the Polar Cal numbers are somewhat questionable, but it sounds plausible). So I started doing some conversions in my head:
1 pound = 454 grams
1 gram of fat = 9 Calories
1 pound of fat = 4,086 Calories
Given that I stayed aerobic the whole ride (low/mid zone 2, zone 3 on the big climbs) the rule of thumb I've heard is that about 30-40% of total calorie expenditure was from stored fat. That would equate to 1,800 - 2,400 calories of fat burned. Does it sound plausible that I burned ~1/2 pound of fat in one ride? Please say it's so!
1 pound = 454 grams
1 gram of fat = 9 Calories
1 pound of fat = 4,086 Calories
Given that I stayed aerobic the whole ride (low/mid zone 2, zone 3 on the big climbs) the rule of thumb I've heard is that about 30-40% of total calorie expenditure was from stored fat. That would equate to 1,800 - 2,400 calories of fat burned. Does it sound plausible that I burned ~1/2 pound of fat in one ride? Please say it's so!